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Elimination of Electrochemical Oxidation during Sample Ionization Using Liquid Sample Desorption Electrospray Ionization (DESI)

Almowalad, Najah K.,
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1474911988216817

Abstract Details

2016, Master of Science (MS), Ohio University, Chemistry and Biochemistry (Arts and Sciences).
This thesis introduces a method to eliminate the electrochemical oxidation that takes place during sample ionization by using liquid sample desorption electrospray ionization (DESI) method. Several organic compounds including N, N, N', N'-tetramethyl-pphenylenediamine (TMPD), N-phenyl-p-phenylenediamine (PPD), phenothiazine (PT), andtriphenylamine (TPA)were observed to produce significant amount of oxidized product ions when electrospray ionization (ESI) in the positive mode ion was used for their ionization due to the inherent oxidation by ESI. Interestingly, the oxidation of these organic compounds can be avoided by using liquid sample desorption electrospray ionization (DESI). This phenomenon could be explained by the fact that no high voltage is directly applied to the sample solution during DESI analysis. Master of Analytical Chemistry. Elimination of Electrochemical Oxidation during Sample Ionization Using Liquid Sample Desorption Electrospray Ionization (DESI).
Hao Chen, Dr (Advisor)
38 p.
Analytical Chemistry
Electrospray Ionization; Desorption Electrospray Ionization

Recommended Citations

Citations

  • Almowalad, , N. K. (2016). Elimination of Electrochemical Oxidation during Sample Ionization Using Liquid Sample Desorption Electrospray Ionization (DESI) [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1474911988216817

    APA Style (7th edition)

  • Almowalad, , Najah. Elimination of Electrochemical Oxidation during Sample Ionization Using Liquid Sample Desorption Electrospray Ionization (DESI). 2016. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1474911988216817.

    MLA Style (8th edition)

  • Almowalad, , Najah. "Elimination of Electrochemical Oxidation during Sample Ionization Using Liquid Sample Desorption Electrospray Ionization (DESI)." Master's thesis, Ohio University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1474911988216817

    Chicago Manual of Style (17th edition)

ohiou1474911988216817
714
© 2016, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.